Final answer:
Teeth grinding caused by a psychoactive substance can lead to dental decay.
Explanation:
Teeth grinding, known as bruxism, can lead to dental decay. One psychoactive substance associated with teeth grinding is methamphetamine, which can cause severe bruxism due to its stimulant effects on the central nervous system.
Learn more about Bruxism and psychoactive substances here:
https://brainly.com/question/34608873
